• Mess about: Misbehave
• Mess about: Be in a casual non-committal relationship
• Mess about: Play with; to toy with; to waste the time of (a person)
• Mess around: Fiddle idly
• Mess around: Joke, kid, or play
• Mess around: Have a sexual relationship, especially one which is non-commital
• Mess up: Make a mess of; to untidy, disorder, soil, or muss
• Mess up: Cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin
• Mess up: Botch, bungle; to perform poorly on
• Mess up: Make a mistake; to do something incorrectly; to perform poorly
• Mess up: Cause (another person) to make unwanted mistakes in a given task, usually through distraction or obnoxious behavior
• Mess up: Damage; injure
• Mess up: Manhandle; beat up; rough up
• Mess up: Discombobulate, utterly confuse, or confound psychologically; to throw into a state of mental disarray
• Mess with: Interfere with
• Mess with: Diss; to put down
• Mess with: Joke around with or dupe someone, in either a friendly or unfriendly manner